![\"GOES-16](\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2020\/09\/200916_goes16_infrared_glmFlashExtentDensity_Huricane_Sally_landfall_anim.gif\")
<\/a>GOES-16 \u201cClean\u201d Infrared Window (10.35 \u00b5m)<\/em> images (with and without an overlay of GLM Flash Extent Density) [click to play animation | MP4<\/strong><\/a>]<\/p><\/div>At 0500 UTC<\/strong><\/a> on 16 September 2020, Hurricane Sally rapidly intensified (ADT<\/strong><\/a> | SATCON<\/strong><\/a>) to a Category 2<\/strong><\/a> storm, and soon thereafter made landfall near Gulf Shores, Alabama at 0945 UTC<\/strong><\/a>. During that time period, 1-minute GOES-16 Infrared imagery — with and without an overlay of GLM Flash Extent Density (above)<\/strong><\/em> — displayed a ragged eye structure, along with a lack of GLM-detected lightning activity in the immediate vicinity of the storm center. The eye passed just to the west of Buoy 42012<\/strong><\/a>, where the wind gusted to 95.2 knots or 110 mph at 0510 UTC (below)<\/strong><\/em>.<\/p>\n Plot of wind speed (blue),<\/em> wind gusts (red)<\/em> and pressure (green)<\/em> at Buoy 42012<\/p><\/div>\n How did Sally change the Sea Surface Temperatures (SSTs) in the Northern Gulf? The toggle below of Advanced Clear Sky Processor for Ocean (ACSPO) SSTs from VIIRS, derived using CSPP<\/a> (the Community Satellite Processing Package) and direct broadcast data at CIMSS, shows SSTs about 2\u00baF cooler (cyan in the enhancement, about 80\u00baF) compared to surrounding waters that are 82-83\u00baF..<\/p>\n<\/a>
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